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Unformatted text preview: o Gases @ 1 atm Solutions @ 1M Temperature @ 25°C o Standard Potential is under conditions (E ) Not standard (E) Galvanic Cell/Voltaic Cell o E cell = E reduction + E oxidation o E oxidation = – E reduction o E cell = E reduction of the cathode – E reduction of the anode Standard Half-cell potential is the difference in voltage between an electrode and a standard electrode o Standard Hydrogen Electrode (SHE) Platinum electrode in contact with H 2 and H + SHE ≡ 0 V If not given an equation, the more positive E red value is the cathode o Cu 2+ + 2e- Cu E = 0.34V Zn Zn 2+ + 2e-E = 0.76V E cell = 1.10 V New Example o Silver-Zinc o Zn (s) | Zn 2+ ||Ag + |Ag (s)...
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- Fall '07
- Electrochemistry, ZN ZN, Cu Zn Reduction, Electrode Zn, Anode half cell